AuL observed via SiNx membrane window
Image courtesy of Microscopy and Microanalysis

Abstract

The use of SiNx windows has been well established as a technology which can be readily employed to observe microstructural evolution during in situ studies in the TEM/STEM as an alternative to experiments using a differentially pumped environmental TEMs. In previous studies using SiNx membrane windows in liquid cells it was shown that the penumbra of the holder was the principle limitation in the use of X-ray Energy Dispersive Spectroscopy (XEDS). This was principally due to the cover/lid design, which can partially or completely block x-ray signal detection. The modifications which were established for that work have recently been extended to gaseous holder configurations. In this work FEI Tecnai F20, and CM200F TEMs equipped with windowless SDD systems from EDAX (Apollo) were used to evaluate the performance of an implementation of this technology on a Protochips Atmospheric Holder both for simple spectroscopy as well as mapping at nominally 1 ATM.

Impact Statement

Extended abstract of a paper presented the use of SiNx windows has been well established as a technology which can be readily employed to observe microstructural evolution during in situ studies in the TEM/STEM as an alternative to experiments using a differentially pumped environmental TEMs.